Specifications

17 Edit the cluster remediation options.
The Cluster Remediation Options page is available only when you remediate hosts in a cluster.
Option Details
Disable Distributed Power
Management (DPM) if it is enabled
for any of the selected clusters.
Update Manager does not remediate clusters with active DPM.
DPM monitors the resource use of the running virtual machines in the
cluster. If sufficient excess capacity exists, DPM recommends moving
virtual machines to other hosts in the cluster and placing the original host
into standby mode to conserve power. Putting hosts into standby mode
might interrupt remediation.
Disable High Availability admission
control if it is enabled for any of the
selected clusters.
Update Manager does not remediate clusters with active HA admission
control.
Admission control is a policy used by VMware HA to ensure failover
capacity within a cluster. If HA admission control is enabled during
remediation, the virtual machines within a cluster might not migrate with
vMotion.
Disable Fault Tolerance (FT) if it is
enabled for the VMs on the selected
hosts.
If FT is turned on for any of the virtual machines on a host,
Update Manager does not remediate that host.
For FT to be enabled, the hosts on which the Primary and Secondary
virtual machines run must be of the same version and must have the same
patches installed. If you apply different patches to these hosts, FT cannot
be re-enabled.
Enable parallel remediation for the
hosts in the selected clusters.
Remediate hosts in clusters in a parallel manner. If the setting is not
selected, Update Manager remediates the hosts in a cluster sequentially.
By design only one host from a Virtual SAN cluster can be in a
maintenance mode at any time. Update Manager remediates hosts that are
part of a Virtual SAN cluster sequentially even if you select the option to
remediate them in parallel.
By default, Update Manager continuously evaluates the maximum number
of hosts it can remediate concurrently without disrupting DRS settings.
You can limit the number of concurrently remediated hosts to a specific
number.
NOTE Update Manager remediates concurrently only the hosts on which
virtual machines are powered off or suspended. You can choose to power
off or suspend virtual machines from the Power State menu in the
Maintenance Mode Settings pane on the Host Remediation Options page.
Migrate powered off and suspended
virtual machines to other hosts in
the cluster, if a host must enter
maintenance mode.
Update Manager migrates the suspended and powered off virtual
machines from hosts that must enter maintenance mode to other hosts in
the cluster. You can choose to power off or suspend virtual machines
before remediation in the Maintenance Mode Settings pane.
18 (Optional) Generate a cluster remediation options report by clicking Generate Report on the Cluster
Remediation Options page and click Next.
19 On the Ready to Complete page, click Finish.
NOTE In the Recent Tasks pane, the remediation task is displayed and will remain at about 22 percent for
most of the process. The process is still running and will take approximately 15 minutes to complete.
Upgrade or Migrate Hosts Interactively
You can boot the ESXi installer from a CD, DVD, or USB flash drive to upgrade ESX/ESXi 4.x, ESXi 5.0.x,
and 5.1.x hosts to ESXi 5.5.
IMPORTANT If you are performing a fresh ESXi installation, see the vSphere Installation and Setup
documentation. The instructions in this vSphere Upgrade documentation are for an upgrade or migration of
ESXi or ESX.
vSphere Upgrade
180 VMware, Inc.